Has anyone seen the new Adafruit Camera Board for the CM4:
Together attached with the CM4, it would make for a very compact and light Air Unit. However, it doesn’t look like power and USB points are easily accessible as a solder pad (like the raspi0’s).
I currently have the 3B mini setup, but due to the awkward square shape and layout, it really is not very compact. Also, it runs hot!
I have a Pi 3B mini on order, it needs a heat sink then by your comment!
Mine will also be in an enclosure which has fan forcing airflow though it so hopefully it will run cool.